Strange issue with kids's game. (Roblox)

[AllPurposeGeek]

My kids have alerted me that the game they play, Roblox, will kick them out after 30 minutes of playing. Sometimes it will even kick one off if the other logs on.  Apparently, this has been going on for a while so it's tough to pinpoint.  I have tried reverting to the last build from 22.1 and it still occurs.  Swapping the firewall out for a generic router appears to resolve this odd issue.  IPS is disabled, uPNP service is installed (does not appear to be used by the game).  Ony firewall rules are some port forwarding for my server with a GeoIP filter.

When i searched for anyone having a similar issue, I only found a pfsense user post from March.
https://forum.pfsense.com/topic/170972/roblox-277-error

Opnsense is running as a VM on HyperV (2022).  4GB of ram a Core i5-6500 with 4 cores allocated to the VM

Anyone else having a similar issue with their kid's game?